Home / 151,547.32-209,181.18-87,900.76

Finding the Fourth Proportional to 151,547.32, 209,181.18 and 87,900.76

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Solution

The fourth proportional to 151,547.32, 209,181.18 and 87,900.76 is: 121,329.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,547.32 : 209,181.18 = 87,900.76 : x
  2. Step 2: Convert to fraction form
    151,547.32/209,181.18 = 87,900.76/x
  3. Step 3: Cross multiply
    151,547.32x = 209,181.18 × 87,900.76
  4. Step 4: Simplify right side
    151,547.32x = 18,387,184,699.70
  5. Step 5: Solve for x
    x = 18,387,184,699.70/151,547.32
  6. Step 6: Final answer
    x = 121,329.66

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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.