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Finding the Fourth Proportional to 160,393.60, 221,337.12 and 87,798.16

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Solution

The fourth proportional to 160,393.60, 221,337.12 and 87,798.16 is: 121,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,393.60 : 221,337.12 = 87,798.16 : x
  2. Step 2: Convert to fraction form
    160,393.60/221,337.12 = 87,798.16/x
  3. Step 3: Cross multiply
    160,393.60x = 221,337.12 × 87,798.16
  4. Step 4: Simplify right side
    160,393.60x = 19,432,991,875.70
  5. Step 5: Solve for x
    x = 19,432,991,875.70/160,393.60
  6. Step 6: Final answer
    x = 121,158.15

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1.5x scale

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.