Home / 153,631.21-212,011.95-85,652.50

Finding the Fourth Proportional to 153,631.21, 212,011.95 and 85,652.50

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Solution

The fourth proportional to 153,631.21, 212,011.95 and 85,652.50 is: 118,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,631.21 : 212,011.95 = 85,652.50 : x
  2. Step 2: Convert to fraction form
    153,631.21/212,011.95 = 85,652.50/x
  3. Step 3: Cross multiply
    153,631.21x = 212,011.95 × 85,652.50
  4. Step 4: Simplify right side
    153,631.21x = 18,159,353,547.38
  5. Step 5: Solve for x
    x = 18,159,353,547.38/153,631.21
  6. Step 6: Final answer
    x = 118,200.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.