Home / 98,779.19-148,140.15-70,463.75

Finding the Fourth Proportional to 98,779.19, 148,140.15 and 70,463.75

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Solution

The fourth proportional to 98,779.19, 148,140.15 and 70,463.75 is: 105,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,779.19 : 148,140.15 = 70,463.75 : x
  2. Step 2: Convert to fraction form
    98,779.19/148,140.15 = 70,463.75/x
  3. Step 3: Cross multiply
    98,779.19x = 148,140.15 × 70,463.75
  4. Step 4: Simplify right side
    98,779.19x = 10,438,509,753.86
  5. Step 5: Solve for x
    x = 10,438,509,753.86/98,779.19
  6. Step 6: Final answer
    x = 105,675.20

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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.