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Finding the Fourth Proportional to 152,341.80, 210,230.22 and 87,787.32

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Solution

The fourth proportional to 152,341.80, 210,230.22 and 87,787.32 is: 121,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,341.80 : 210,230.22 = 87,787.32 : x
  2. Step 2: Convert to fraction form
    152,341.80/210,230.22 = 87,787.32/x
  3. Step 3: Cross multiply
    152,341.80x = 210,230.22 × 87,787.32
  4. Step 4: Simplify right side
    152,341.80x = 18,455,547,596.81
  5. Step 5: Solve for x
    x = 18,455,547,596.81/152,341.80
  6. Step 6: Final answer
    x = 121,145.66

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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.