Home / 103,353,443.70-155,030,165.55-72,742,442.10

Finding the Fourth Proportional to 103,353,443.70, 155,030,165.55 and 72,742,442.10

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Solution

The fourth proportional to 103,353,443.70, 155,030,165.55 and 72,742,442.10 is: 109,113,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,353,443.70 : 155,030,165.55 = 72,742,442.10 : x
  2. Step 2: Convert to fraction form
    103,353,443.70/155,030,165.55 = 72,742,442.10/x
  3. Step 3: Cross multiply
    103,353,443.70x = 155,030,165.55 × 72,742,442.10
  4. Step 4: Simplify right side
    103,353,443.70x = 11,277,272,841,274,290
  5. Step 5: Solve for x
    x = 11,277,272,841,274,290/103,353,443.70
  6. Step 6: Final answer
    x = 109,113,663.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.