Home / 158,123.36-218,211.95-86,501.84

Finding the Fourth Proportional to 158,123.36, 218,211.95 and 86,501.84

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Solution

The fourth proportional to 158,123.36, 218,211.95 and 86,501.84 is: 119,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,123.36 : 218,211.95 = 86,501.84 : x
  2. Step 2: Convert to fraction form
    158,123.36/218,211.95 = 86,501.84/x
  3. Step 3: Cross multiply
    158,123.36x = 218,211.95 × 86,501.84
  4. Step 4: Simplify right side
    158,123.36x = 18,875,733,661.42
  5. Step 5: Solve for x
    x = 18,875,733,661.42/158,123.36
  6. Step 6: Final answer
    x = 119,373.47

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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.